Switch-terminal.



N0 MODEL.

PATBNTED Mme. .1903.

G. W.. HART.

SWITCH TERMINAL.

APPL IGATION FILED JUNE 28, 1902.

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UNTTE STATES PATENT OFFICE.

GERALD W. HART, OF HARTFORD, CONNECTICUT, ASSIGNOR TO THE HART MANUFACTURING COMPANY, OF HARTFORD, CONNECTICUT, A CORPO- RATION OF NEW JERSEY.

SWITCH-TERMINAL.

SPECIFICATION forming part of Letters Patent No. 717,675, dated 3' anuary 6, 1903. Application filed June 26, 1902. Serial No. 113,196. (No model.)

To 6015 whom, it may concern: I

Be it known that I, GERALD W. HART, a citizen of the United States, residing at Hartford, county of Hartford, State of Connectiout, have invented certain new and useful Improvements in Switch-Terminals, of which the followingis a full, clear, and exact description.

My invention relates to electric switches and the like, and particularly to the terminal portion thereof.

In the accompanying drawings, Figure 1 is a plan view of a switch-terminal embodying my invention. Fig. 2 is a view of the under side thereof. Fig. 3 is aside elevation looking from right to left of Fig. 1. Fig. 4 is a section on the line 4 4, Fig. l. Fig. 5 is a plan view of a detail of construction.

1 is a suitable base. 2 is a suitable projection or extension thereof, preferably of tubu lar form and constituting what may be termed a post.

3 and 31 are contact members carried by the post 2 and connected therewith in a manner hereinafterdescribed. The contact member 3, as shown in Fig. 5, is generally of a kidney-shaped outline aside from the extensions A A, one or more of which may be provided, which extensions are offset from the plane of the body of thecontactmember, so as to afford free entrance of the switch-blade or contact-piece to be used therewith. This is not shown, since the form of the ordinary blade-switch is Well known. The contact- 3 5 blade engages with that portion of each contact member between the ends or extensions A A, and since it is desirable to have that portion of the contact member yielding I preferably provide a slot 0., preferably of'curved 4o outline, having the enlargements C at the extremities thereof, said enlargements being preferably formed-at the inner end of said slot C. vl3 is a cavity in the side of said contact member having preferably parallel edges 5 or sides. The contact members 3 and 31 are connected to the post 2, as will now appear. The post 2 is slotted in its sides, as shown in Figs. 1 and 4, to a depth of substantially the width of the cavity B. This permits each of the contact members to be slipped onto the post 2, so. that they will assume the position substantially asshown in Figs. 1, 2, and 3.

In this position the recesses C stand below the surface of the post 2. In order to secure the members together, a suitable chisel or punch may be employed to indent the post 2- at one side of each of the members 3, for example, as shown at D, Figs. 3 and 4-thus spreading the metal and causing a portion of the same to project into the recess C C and lock the parts together, as best seen in Fig.

4-. By this simple means the device is quickly and economically constructed and assembled and the parts eifectively held in the desired position. The sides of the cavityB contacting with the post 2 in the bottom of the slots formed therein prevents the independent rotation or looseness of either of the members 3 relatively to the post 2. In the preferable construction the post is made separate from the base, in which event the bottom of the post is preferably squared or rendered of an irregular shape, as best seen in Fig. 2, so that I it may take into a correspondingly-shaped hole in the base, thus preventing the rotation 7 5 of the post relatively to said base. In this construction the post may be, if desired, riveted to the base.

What I claim is l. A switch terminal comprising a post, contact members carried thereby, an opening in the side of each contact member, said contact members partially surrounding said post and being secured thereto by a portion of the metal of .said post.

2. Aswitch-terminal comprising an integral post,a contact member having an opening in the side and partiallysurrounding said post and secured thereto.

3. Ida switch-terminal, a'post, slots in the go opposite sides thereof, a contact member, a cavity in the side thereof adapted to engage the slotted portion of said post, and means for securing the contact member in place on said post. 5

4. A switch-terminal comprising a post, a contact member having an opening in the side and partially surrounding said post and secured thereto, and a slot in said contact member partially encircling said post.

5. In a switch contact member, a post, slots in the opposite sides thereof, a contact-piece adapted to engage with said post Within said slots, a recess in said contact member adjacent to said post, a portion of the metal of said post projecting into said recess.

6. A post, a slot in the side thereof, a second member adapted to engage With said post and to project into said slot, a recess in said second member adjacent to the post, a portion of the metal of the post being displaced and projected into said recess.

7. A post, slots in the opposite sides thereof, a second member in engagement with said post, a portion of the metal of the second member projecting into the slots therein, a recess in the said second member adjacent to said post, a portion of the metal of said post being displaced and projecting into said recess to form a lock.

8. In an electrical terminal, a post, a slot therein, a contact member having an opening in the side and adapted to engage with said post in said slot, a lock formed integrally with the post, said lock engaging with said contact member, said contact member only partially surrounding said post.

9. In a device of the character described, a post, slots in the opposite sides thereof, a contact member engaging with said post and projecting into said slots, a curved opening in said contact member concentric with and partially surrounding said post, a portion of the metal adjacent the inner ends of said opening being cut away to form a space in the contact member registering with the space Within the slots in the post and a lock comprising a portion of the metal of the post displaced so as to project into the enlarged space at the inner ends of said opening.

GERALD W. HART.

Witnesses:

R. O. MITCHELL, EMIL F. ZIPFEL. 

